remove_alpha_if_needed static method

Future<void> remove_alpha_if_needed(
  1. String imagePath
)

Implementation

static Future<void> remove_alpha_if_needed(String imagePath) async {
  File file = File(imagePath);
  if (!file.existsSync()) {
    print('文件不存在: $imagePath');
    return;
  }
  List<int> bytes = await file.readAsBytes();
  Image? image = decodeImage(Uint8List.fromList(bytes));
  if (image == null) {
    print('无法解析图片: $imagePath');
    return;
  }
  if (!image.hasAlpha) {
    print('图片没有透明通道，无需处理: $imagePath');
    return;
  }
  Image newImage = image.convert(numChannels: 3);
  await file.writeAsBytes(encodePng(newImage));
  print('已去除 alpha 通道并覆盖: $imagePath');
}